import { unref, watchEffect } from 'vue';
import { useTimeoutFn } from '/@/hooks/core/useTimeout';
export function useModalDragMove(context) {
    const getStyle = (dom, attr) => {
        return getComputedStyle(dom)[attr];
    };
    const drag = (wrap) => {
        if (!wrap)
            return;
        wrap.setAttribute('data-drag', unref(context.draggable));
        const dialogHeaderEl = wrap.querySelector('.ant-modal-header');
        const dragDom = wrap.querySelector('.ant-modal');
        if (!dialogHeaderEl || !dragDom || !unref(context.draggable))
            return;
        dialogHeaderEl.style.cursor = 'move';
        dialogHeaderEl.onmousedown = (e) => {
            if (!e)
                return;
            // 鼠标按下，计算当前元素距离可视区的距离
            const disX = e.clientX;
            const disY = e.clientY;
            const screenWidth = document.body.clientWidth; // body当前宽度
            const screenHeight = document.documentElement.clientHeight; // 可见区域高度(应为body高度，可某些环境下无法获取)
            const dragDomWidth = dragDom.offsetWidth; // 对话框宽度
            const dragDomheight = dragDom.offsetHeight; // 对话框高度
            const minDragDomLeft = dragDom.offsetLeft;
            const maxDragDomLeft = screenWidth - dragDom.offsetLeft - dragDomWidth;
            const minDragDomTop = dragDom.offsetTop;
            const maxDragDomTop = screenHeight - dragDom.offsetTop - dragDomheight;
            // 获取到的值带px 正则匹配替换
            const domLeft = getStyle(dragDom, 'left');
            const domTop = getStyle(dragDom, 'top');
            let styL = +domLeft;
            let styT = +domTop;
            // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
            if (domLeft.includes('%')) {
                styL = +document.body.clientWidth * (+domLeft.replace(/%/g, '') / 100);
                styT = +document.body.clientHeight * (+domTop.replace(/%/g, '') / 100);
            }
            else {
                styL = +domLeft.replace(/px/g, '');
                styT = +domTop.replace(/px/g, '');
            }
            document.onmousemove = function (e) {
                // 通过事件委托，计算移动的距离
                let left = e.clientX - disX;
                let top = e.clientY - disY;
                // 边界处理
                if (-left > minDragDomLeft) {
                    left = -minDragDomLeft;
                }
                else if (left > maxDragDomLeft) {
                    left = maxDragDomLeft;
                }
                if (-top > minDragDomTop) {
                    top = -minDragDomTop;
                }
                else if (top > maxDragDomTop) {
                    top = maxDragDomTop;
                }
                // 移动当前元素
                dragDom.style.cssText += `;left:${left + styL}px;top:${top + styT}px;`;
            };
            document.onmouseup = () => {
                document.onmousemove = null;
                document.onmouseup = null;
            };
        };
    };
    const handleDrag = () => {
        const dragWraps = document.querySelectorAll('.ant-modal-wrap');
        for (const wrap of Array.from(dragWraps)) {
            if (!wrap)
                continue;
            const display = getStyle(wrap, 'display');
            const draggable = wrap.getAttribute('data-drag');
            if (display !== 'none') {
                // 拖拽位置
                if (draggable === null || unref(context.destroyOnClose)) {
                    drag(wrap);
                }
            }
        }
    };
    watchEffect(() => {
        if (!unref(context.visible) || !unref(context.draggable)) {
            return;
        }
        useTimeoutFn(() => {
            handleDrag();
        }, 30);
    });
}
